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Humans, like other animals, have a(biology)______clock that tells us when to sleep and eat.
副省长由省长提名，由省人大代表大会选举产生。( )
A. 对
B. 错
审计机关之间对审计管辖范围有争议的，由争议双方协商确定。( )
A. 对
B. 错
Why is flood insurance necessary to youBecause most of natural disasters in this country ______.
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